Introduction to the advantages and disadvantages of soft pack batteries

The soft pack battery is packaged with aluminum-plastic film in structure. The biggest advantage of aluminum film packaging is that it is soft and flexible. When the battery has a safety problem, the soft pack battery will generally burst and crack, and the internal liquid will not leak. The gas cannot be discharged, which leads to an explosion and fire. The difference between this and the steel shell or aluminum shell battery is that the advantages of this battery are still predictable. Secondly, the weight of the battery is light. In other words, the installation of a soft pack battery can reduce the weight of the battery, and the cruising range of the vehicle can be improved to a certain extent. Advantages of soft-pack batteries: soft-pack batteries, aluminum-plastic film has a large deformation space, unlike steel-shell aluminum-shell batteries that will explode when thermally out of control; the shell is a layer of aluminum-plastic film, which is light in weight and occupied by inactive parts The specific gravity is small. The weight of the soft pack battery is 40% lighter than the steel shell lithium battery of the same capacity and 20% lighter than the aluminum shell battery; the capacity of the soft pack battery is larger than that of the steel shell battery of the same size. The capacity of the soft pack battery is 10 higher than that of the steel shell battery of the same size. ～15%, which is 5～10% higher than the aluminum shell battery; the shell strength is low, and the mechanical stress on the internal structure during the cycle is small, which is beneficial to the cycle life (of course, no additional stress is applied in the group design Bottom); The position of the tabs is sufficient, and the heat is evenly distributed during the charging and discharging process. Disadvantages of soft-pack batteries: low shell strength and strong reliance on group technology; compared with winding processing methods, the processing efficiency of laminated sheets is relatively low. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What are the advantages of sodium batteries? Can it replace lithium batteries?